(19)
(11) EP 2 151 967 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
28.07.2010 Bulletin 2010/30

(43) Date of publication A2:
10.02.2010 Bulletin 2010/06

(21) Application number: 09176368.0

(22) Date of filing: 10.03.2006
(51) International Patent Classification (IPC): 
H04L 25/02(2006.01)
 H04L 5/02(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

(30) Priority: 10.03.2005 US 660907 P

(62) Application number of the earlier application in accordance with Art. 76 EPC:
06738060.0 / 1872545

(71) Applicant: Qualcomm Incorporated
San Diego, CA 92121-1714 (US)

(72) Inventors:
  • Mukkavilli, Krishna Kiran
    San Diego, CA, 92121-1714 (US)
  • Wang, Michael Mao
    San Diego, CA, 92129 (US)
  • Vrcelj, Bojan
    San Diego, CA, 92122 (US)
  • Krishnamoorthi, Raghuraman
    San Diego, CA, 92121-1714 (US)
  • Mantravadi, Ashok
    San Diego, CA, 92122 (US)

(74) Representative: Heselberger, Johannes 
Patent- und Rechtsanwälte Bardehle-Pagenberg-Dost-Altenburg-Geissler Galileiplatz 1
81679 München
81679 München (DE)

   


(54) Pilots Positioning for Multicast Transmission in OFDM


(57) Systems and methods are provided for the transmission of waveforms to aid channel estimation, timing synchronization, and AGC bootstrapping in a wireless network. The method includes inserting at least one TDM pilot symbol located at a transition between wide area and local area waveforms to facilitate decoding of the transmission block.







Search report